Re: [PATCH v8 2/7] scsi: libsas: Define NCQ Priority sysfs attributes for SATA devices

Damien Le Moal
2024-03-26T11:52:42Z

On 3/26/24 19:16, Geert Uytterhoeven wrote:
> Hi Damien,
>
> On Tue, Mar 26, 2024 at 11:07 AM Damien Le Moal <dlemoal@kernel.org> wrote:
>> On 3/26/24 18:53, Geert Uytterhoeven wrote:
>>> On Thu, Mar 7, 2024 at 10:55 PM Igor Pylypiv <ipylypiv@google.com> wrote:
>>>> Libata sysfs attributes cannot be used for libsas managed SATA devices
>>>> because the ata_port location is different for libsas.
>>>>
>>>> Defined sysfs attributes (visible for SATA devices only):
>>>> - /sys/block/sda/device/ncq_prio_enable
>>>> - /sys/block/sda/device/ncq_prio_supported
>>>>
>>>> The newly defined attributes will pass the correct ata_port to libata
>>>> helper functions.
>>>>
>>>> Reviewed-by: John Garry <john.g.garry@oracle.com>
>>>> Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
>>>> Reviewed-by: Jason Yan <yanaijie@huawei.com>
>>>> Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
>>>
>>> Thanks for your patch, which is now commit b4d3ddd2df7531e3 ("scsi:
>>> libsas: Define NCQ Priority sysfs attributes for SATA devices")
>>> in scsi-mkp/for-next
>>>
>>>> --- a/drivers/scsi/libsas/sas_ata.c
>>>> +++ b/drivers/scsi/libsas/sas_ata.c
>>>
>>>> +
>>>> +DEVICE_ATTR(ncq_prio_supported, S_IRUGO, sas_ncq_prio_supported_show, NULL);
>>>> +
>>>
>>> [...]
>>>
>>>> +
>>>> +DEVICE_ATTR(ncq_prio_enable, S_IRUGO | S_IWUSR,
>>>> + sas_ncq_prio_enable_show, sas_ncq_prio_enable_store);
>>>> +
>>>
>>> When both CONFIG_SCSI_SAS_ATA and CONFIG_SATA_HOST are enabled:
>>
>> I have both enabled in my config and I do not see any issue. What is special
>> with these on ARM ?
>
> Modular or built-in?
> I have them built-in, and it fails on arm64 (with renesas_defconfig,
> which is not upstream).
> It also fails with shmobile_defconfig on arm32, after manually adding
> CONFIG_SCSI_SAS_LIBSAS=y and CONFIG_SCSI_SAS_ATA=y.

Hmm... That must be it. I did a modular build.
Will check that again and send a fix. Thanks.

--
Damien Le Moal
Western Digital Research